At Microsoft 2011 CES booth, a single Windows Home Server product featured in the Windows PC showcase, revealed the new name of "Vail",
"Discretely displayed at the show is the Lacie 5BIG Back Up Server. On closer inspection of information card reveals an interesting tidbit, its operating system is Windows 7 Home Server. A Microsoft representative later confirmed this is indeed the official name for the next version otherwise known as codename "Vail"."
Since the server is already on the market with the current version of Windows Home Server, it's assumed this is at least one model that will also be sold with the new OS when it is available (not that anyone should buy it).
No availability or pricing information was provided.